21DS115 B AND C 21" Professional Neodymium Subwoofer 8 Ohm NEW

BRAND NEW21DS115 B AND C 21" Professional Neodymium Subwoofer 8 OhmB&C's 21DS115 21" subwoofer is the next evolution in high output subwoofer design. Using a new, longer, four layer aluminum voice coil to produce more energy in the gap, higher sensitivity, lower distortion, and better overall performance. The 21DS115 features a 36 mm long, 4.5" diameter (116mm) copper clad aluminum wire voice coil. With a 1,700watt AES power rating, 99 dB sensitivity, and over 15 mm of linear excursion, this high energy subwoofer is a significant step forward from similar models in the B&C range, even approaching the performance of their 6" voice coil alternatives.99 dB efficiency to ensure high output even with modest amplificationDouble silicone spider keeps excursion linear even beyond rated XmaxNeodymium magnet allows a very high motor strength without excess weight4.5" four layer CCA voice coil allows high power handling and BlAluminum shorting ring help control the voice coil for lower distortionShape CylindricalProduct type Cone driverBrand B&C SpeakersDimensional category 21 inchFront shape CylindricalMagnet type NeodymiumBasket material AluminumNominal impedance 4 ohmZmin 3.1 ohmNominal power handling 1700 WMax power handling 3400 WSensitivity 99 dBFrequency response 30-1000 HzVoice coil diameter 4.5 inchExternal diameter 547 mmMounting diameter 508 mmDepth after front 242 mmFront thickness 13 mmFs 30 HzRe 2.2 ohmQes 0.2Qms 11Qts 0.21Vas 274 LSd 1680 cm²Efficiency 3.4 %Xmax 15 mmXvar 17 mmMms 412 grBL 28.8 T.mLe 2.4 mHEBP 150Demodulation ring YesForm suspension Triple rollForm membrane RadialSpider DoubleSpider material Siliconed polycotonRecommended load 130 L (tuned ar 40 Hz)FREE SHIPPING